Evaluation Warning:Appearing in PDF–Spire.PDF 11.6(.NET8)

[[email protected]]

I’m encountering an issue with Spire.PDF Pro Edition (version 11.6) in my .NET Core 8 solution.

Scenario:
I have purchased the Pro Edition license and am using the NuGet package (version 11.6).
I’m setting the license key in my code as follows:
Spire.Pdf.License.LicenseProvider.SetLicenseKey(LicenseKey);
My application opens existing PDF files, modifies them, and saves the changes.

Problem:
Despite setting the license key, the output PDF documents display the following evaluation warning at the top of each page:
"Evaluation Warning : The document was created with Spire.PDF for .NET."

What I’ve Tried:
Verified that the license key is correct and matches my purchased version.
Ensured that SetLicenseKey() is called before any Spire.PDF functionality.
Checked that the license key is not null or empty.

Questions:
Is there something I’m missing in the licensing setup?
Are there any additional steps required to remove the evaluation warning?
Has anyone else experienced this issue with the same setup?

Any insights or suggestions would be greatly appreciated!

[talia.liu]

Hello,

Sorry for the delayed response due to the weekend on our end.
Please note that the type of the two licenses you purchased is the Developer Small Business License. Each Developer Small Business License allows usage by 1 developer and 1 deployment location, each identified by a unique MAC address/machine ID. 1 Developer Small Business license covers up to 4 Mac addresses (1 for development, 1 for deployment, and 2 for testing or backup purposes). When the license is used on machines beyond this limit, it will not be effective, the output file will have the warning messages. We have checked that your license usage had exceeded this limit. To remove the warnings on these machines, you need to upgrade to Developer OEM. If you need, please feel free to contact our sales team at: [email protected].